The ratio of output impedance of a CE amplifier is _______________?

Related Mcqs:

1. A transistor amplifier has high output impedance because ______________?

   A. Emitter is heavily doped
   B. Collector has reverse bias
   C. Collector is wider than emitter or base
   D. None of the above

2. The value of collector load RC in a transistor amplifier is _______________the output impedance of the transistor?

   A. The same as
   B. Less than
   C. More than
   D. None of the above

3. What turn ratio (Np/Ns) of transformer is required to match 4 O speaker to a transistor having an output impedance of 8000 O ?

   A. 2
   B. 7
   C. 3
   D. None of the above

4. If a transistor amplifier draws 2mA when input voltage is 10 V, then its input impedance is ____________?

   A. 20 kΩ
   B. 2 kΩ
   C. 10 kΩ
   D. 5 kΩ

5. The output signal voltage and current of a power amplifier are 5V and 200 mA; the values being r.m.s. What is the power output ?

   A. 1 W
   B. 2 W
   C. 4 W
   D. None of the above

6. The power output of an audio system is 18 W. For a person to notice an increase in the output (loudness or sound intensity) of the system, what must the output power be increased to ?

   A. 2 W
   B. 6 W
   C. 68 W
   D. None of the above

7. A 6 V battery output is divided down to obtain two output voltages. Three 2.2 kΩ resistors are used to provide the two taps. The two output voltages are___________?

   A. 2 V, 4 V
   B. 2 V, 2 V
   C. 2 V, 6 V
   D. 4 V, 6 V

8. A 2-transistor class B power amplifier is commonly called ______________ amplifier?

   A. Dual
   B. Push-pull
   C. Symmetrical
   D. Differential

9. The bandwidth of a single stage amplifier is_____________that of a multistage amplifier?

   A. More than
   B. The same as
   C. Less than
   D. Data insufficient

10. The disadvantage of impedance matching is that it _______________?

    A. Gives distorted output
    B. Gives low power output
    C. Requires a transformer
    D. None of the above